Wrench.



W CHADWICK.

WRENCH.

APPLICATION FILED OCT. 3|, 1914.

Patented Jan. 18, 1916.

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WRENCH.-

. Specification of Letters latent. Pat t J n, 18, 15 16,"

Application filed October 31, 1914. Serial No. 869,627.

To all whom it may concern:

Be it known that I, VVALLAon CHAowIoK, a citizen of the United States,residing at Schenectady, in the county of Schenectady,

and State of New'Yorlnhave inventedcertain new and useful Improvementsin renches; and I do hereby declare the following to be a full, clear,and exact descrip tion of the invention, suchas will enable othersskilled in the art to which it zipper 11, and this body is provided withthe centains to make and use the same.

This invention relates to new and useful improvements in wrenches, andhas for its principal object to provide a wrench which may be used as asubstitute for the usual ratchet wrench.

Another object of the invention is to provide a wrench of the abovecharacter in which the necessity for using the usual pawl and ratchet iseliminated.

A further object of the invention is to increase the gripping power ofthe wrench and provide a device which may be actuated from any angle.

lVith these and other objects in view, the invention consists in thenovel combination and arrangement of parts which will be fully set forthin the following specification and accompanying drawings, in which,

Figure 1 is a view partly in section of a wrench constructed inaccordance with this invention, the handle partly broken away, Fig. 2 isa vertical sectional view taken on line 22 of Fig. l, and showing thenut engaging member in full, Fig; 3 is a detail per spective view of oneof the cover plates, and Fig. 4: is a view of the removable jaw.

Referring now to the drawings by characters of reference, the numeral 1designates the handle of the wrench provided at one end with theenlargement 2. This enlargement is provided with a central, circularaperture 3 in which the rotatable jaw member is mounted. A suitablerecess A extends angularly into the portion 2 and communicates with theaperture 3 through the reduced bore 5. A suitable recess 6 is formed inthe enlargement 2 in direct alinement with the central axis of thehandle 1, and the bottom wall of this recess is inclined as at 7 for apurpose which will be more fully hereinafter described. A suitablerecess 8 extends in a plane parallel to the horizontal axis of theaperture 3 and is formed in the enlargement 2 at a point so that itcomes intermediate the upper and lower terminals of one of the end wallsof the recess 6. This recess 8 communicates with the recess'6 and isarranged to receive the mechanism which will be more fully hereinafterdescribed. I p

The rotatable aw, which is designated by the numeral 9 comprises thecircular body 10 having formed therein the peripheral groove tralhexagonal aperture 12 which is arranged to fit the nut upon which thedevice is used. The sides of the enlargement 2 surrounding the recess 6,are depressed as at 13 and arranged to receive the cover plates 14;which are shaped to fit the depressions and curved as at 15 to conformto the contour of the aperture 3. A suitable screw-receivlng aperture 16is formed in each of' the cover plates near one end and is arranged tore ceive the screw 17 which holds the plate in place. A suitable slot 18is formed transversely of the plate near the opposite end and this slotis arranged to receive the trunnionsof the roller which will be morefully hereinafter described.

The roller above mentioned is arranged to rest in the recess 6 so thatits periphery bears against the inclined wall 7 and the pointdiametrically opposite said wall is arranged to face the opening of therecess. A suitable retaining pin 19 is arranged to bear against theroller to force the same toward the reduced end of the recess and asuitable spring 20 is arranged to bear against the head of the pin andthe screw 21 to force the pin against and into engagement with theroller.

A suitable pin 22 extends through the aperture 5 and the head of saidpin bears against the spring 23, which spring is held in place in therecess 4 by means of the screw 24 and is designed to force the end ofthe pin inwardly and into the groove 11 to retain the jaw member 9 inplace.

In order that the wrench may bev made to fit nuts of different sizes,there are provided a plurality of removable jaw members 25 whichcomprise the bodies 26, which bodies are provided with the centralrecesses 27 in which the nuts are arranged to rest. A suitable hexagonalextension 28 is formed on each body and is designed to fit within the,

tion.

hexagonal recess 12 in the jaw member 9 so as to provide a Wrench whichis capable of being used for nuts of different sizes.

It will be apparent from the foregoing that in use when it is desired totightenor loosen a nut, the wrenchis placed in position according to thedirection in whichthe,

nut is to be turned and upon pulling the handle in the proper directionit" will be 2113-" parent that due to the inclined wall 7 the 7 rollerwill engage the periphery of the jaw member 9 and thereby lock the sameagainst movement in one direction. Upon twisting the handle in theopposite direction it will be apparent thatthe roller will disengage theperiphery due to the inclination of the wall 7 and upon reversing themovement the gripping action will again'take place, thus rotating thejaw member in but one direc- In this way it will be clearly seen that aparticularly simple and efficient wrench is provided which willeliminate the necessity of using a pawl and a ratchet mechanism and theroller clutch is provided to effectively act as a substitute therefor.

While in the foregoing there has been shown and described the preferredembodiment of this invention, it is to be understood that such changesmay be made in the combination and arrangement of parts as will fallwithin the spirit and scope of the invention as defined in the appendedclaim.

What is claimed is: A wrench comprising a handle, an enlargement formedon one end of said handle,

said enlargement provided with a central circular aperture therethrough,a recess formed in said handle and communicating with said opening, ajaw member rotatably mounted within the apertureof the handle, a rollerprovided with trunnions on opposite sides WALLACE CHADWIGK. Witnesses: V

HERMANN F. KLING, MARTIN Snrcrs.

' Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents.

Washington, D. C.

